With the bombing investigation stalled for lack of hard evidence, Jock seeks out an old trusted informant. Tiny, a professional safebreaker, is Jock's direct link to criminals who handle explosives. But Tiny, needing cash, double crosses Jock and decides to blow a safe. Things go wrong when the car he steals to transport his gear has a sleeping baby in the back seat. Jock gets a frantic call for help from the panicked Tiny. His much needed informant is about to go to jail for a long time.